/*
 * Copyright (c) 2009-2010 HIT Microelectronic Center
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 * Authors: Gou Pengfei
 *
 * Date:    May. 2010
 *
 */
#include "cpu/edge/opn/opn_fifo.hh"
#include "cpu/edge/dist/impl.hh"

using namespace std;

template<class Impl>
void 
OpnFifo<Impl>::init (const string &name) 
{ 
    squashCnt = 0;
}

template<class Impl>
void 
OpnFifo<Impl>::push (OpnPktPtr &p) 
{
    // Do not check whether this 
    // packet is valid or not.
    // Packet with invalid status
    // will be handled when it 
    // is pushed out.
    fifo.push_back(p);
}

template<class Impl>
typename OpnFifo<Impl>::OpnPktPtr&
OpnFifo<Impl>::peek() 
{
    assert(!fifo.empty());
    
    return fifo.front(); 
}

template<class Impl>
void 
OpnFifo<Impl>::pop() 
{
    fifo.pop_front();
}

template<class Impl>
bool 
OpnFifo<Impl>::empty() 
{
    return fifo.empty();
}

template<class Impl>
void 
OpnFifo<Impl>::initSquashCnt() 
{
    squashCnt = 0;
}

template<class Impl>
int 
OpnFifo<Impl>::getSquashCnt() 
{
    return squashCnt;
}

template<class Impl>
void 
OpnFifo<Impl>::squash(TheISA::BlockID block_id) 
{
    typename std::list <OpnPktPtr>::iterator iter;
    typename std::list <OpnPktPtr>::iterator iter2;

    iter = fifo.begin();
    while ( iter != fifo.end() ) {
        iter2 = iter;
        iter++;
        if ( (*iter2)->info->blockID > block_id) { 
            squashCnt++;
            fifo.erase(iter2);
        }
    }
}

template class OpnFifo<DistEdgeCPUImpl>;

